We will continue to innovate and improve our HDPE Butt Fusion 22 5 Degree Elbow, UPVC Reducer, Electrofusion bend 45 so as to provide our customers with the best products in the market. We set the benchmark for effective training and self-learning, and use qualification standards to drive continuous learning and improvement. We implement a safety system for all finished products to ensure the stability and reliability of product quality. We know that talent is the foundation of the company's development, so our company continues to attract talents, retain talents and better manage human resources. Our office philosophy is that we not only need to think creatively, but also to work enthusiastically in a harmonious environment.

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HDPE 45 degree elbows is used to join two lengths of HDPE pipe on an angle of 45 degrees.

SUNPLAST HDPE 45 degree elbow fittings can be supplied in diameters ranging from 50mm to 800mm in SDR11 & SDR17. The Fittings in SDR 11 are rated to PN16 for water and PN10 for gas, while SDR 17 fittings are rated to PN10 for water and PN6 for gas.

SUNPLAST HDPE 45 degree elbows are injection molded type, fabricated by 100% PE100 material, can fully conform to ISO4427-3,EN12201-3, AS/NZS 4129, EN1555, EN ISO15494 standard.

SUNPLAST keeps mass stock in demand for regular sizes, and customers’ urgent demand & prompt shipment request can be satisfied.

More brief details as below:

Product Specifications

HDPE 45 Degree Elbow (Butt Fusion): available from DN50mm ~DN800mm

Pressure: SDR11-PN16 & SDR17-PN10

Material: 100% virgin PE100 material

Color: black color or blue color.

(Noted: the technical data is just for reference, some data may change, if you need exact data, then please contact us directly)

Our Product Range

SUNPLAST is a professional manufacturer of HDPE fittings over 20 years in China, and here in SUNPLAST, all customers can find the best solution of fittings for their pipeline systems.

SUNPLAST HDPE butt fusion fittings can be supplied in a diameter ranging from dn50 to dn800mm in both SDR11 & SDR17, with regular types: HDPE end caps, HDPE reducer, HDPE 90 degree elbow, HDPE 45 degree elbow, HDPE 22.5 degree elbow, HDPE equal tee, HDPE reducing tee, HDPE flange adaptor, G.I. backing rings.,etc

Raw Material

Raw material with excellent performance is the most import element to manufacture the topping quality fittings. To guarantee the superior quality of our HDPE spigot fittings, SUNPLAST only adopts TOP QUALITY PE100 material from worldwide reputed factories that are approved by PE100+ association (see: https://www.pe100plus.com/PE-Pipes/materials/Quality-Materials-List/high-quality-i239.html).The PE100 materials we regular use are: HE3490-LS from Borealis, P6006 from Sabic & YGH041T from Sinopec.

Those PE100 materials are certified as the top raw material by the professional in this vocation. The preferable performance of those materials and their stability establish the high quality station of SUNPLAST HDPE fittings products at all the while.

Butt-fusion procedure For HDPE pipes & Fittings

Butt Fusion is the most important and widely used method of connection for HDPE pipes larger than 110 mm. It is a method of jointing pipe ends by way of heating and cooling under pressure, resulting in pipe joints as strong as the pipe itself.

The welding zone must be protected from unsuitable weather conditions (e.g.humidity effects, wind and temperatures below 0°C). The surfaces to be joined must be undamaged and free from impurities or loose particles.

A preparation before welding is necessary. Get ready of the pipes & fittings, and correct butt welding machine as per pipe dimension. Insert two pipes ends on both side of the machine clamps, adjust the alignment of pipe line by tightening or losing bronze nuts on the top aluminum clamps, and clean outside and inside pipe surface.

The pipes must be aligned when they are clamped into the mirror welder in such a way that the surfaces are in the same plane (parallel) to each other. The HDPE pipes can be positioned directly into the welding machine. Install the correct adapter insert for the size of pipe diameter to be used and tighten them to the

machine. It is important to tighten the top clamp nuts evenly in order to get a totally circular pipe, an even clamping pressure must be achieved. Then, make the first dry matching (press the two pipes to each other) and check the amount of shaving that will be required.

The major procedure of butt welding including 4 steps:

a). milling/shaving process

After the dry matching is completed, open up the pipes and introduce the shaver. Turn the shaver on and adjust to suitable speed.

Press the two pipes together, and shave until a continuous strip of HDPE is peeling off on both sides of the shaver. Once constant peeling off is observed, release the pressure on the pipes and separate the pipes. Do not turn off the shaver until the pipes are apart. If the shaver is stopped during shaving, the shaver will create an end cut-mark and the shaving operation will have to be repeated.

b). Effect after milling

Remove the shaver, match the pipes again, and check the pipe for proper alignment. Sometimes, even when continuous peeling off is achieved on each side of the shaver, the pipes do not match properly. This is normally due to the clamps, which are pressing on to the pipe with different pressures. Re-tightening

the nuts slightly on either side is one solution. But, if this does not help, shimming normally does the job. Open up one clamp and insert a shim in between the jaws and the pipe. This shim will concentrate the pressure on to the pipe and move the pipe into alignment. It is important to remember that, if the clamp has been opened during operation, the shaving operation must be repeated. Once the pipes are correctly aligned, separate the pipes again for cleaning.

Remove chips inside the pipes on both sides, all chips scattered under the pipes,and also inside the machine. Otherwise, they will stick to the mirror (heat plate) later while re-heating. Remove the chips by using a brush or a small hook made out of a thin steel wire. Never put any dirty gloves inside the pipe or remove the chips with your hands. Do not touch the shaved pipe ends. To be on the safe side, always clean the surface with a clean rag and mineral spirits/alcohol before you introduce the mirror.

c). Heating Process

Before you introduce the mirror, you should have all parameters available for this operation. Also check the mirror (heating plate) temperature. Normally, the mirror has a yellow or red lamp, which tells you if the mirror has reached working temperature. You have now shaved the pipe into a good fit and removed the shaver and introduced the mirror.

Push the pipes together against the mirror and raise the pressure to the Bead-up pressure. This pressure needs to be maintained until the Bead-up height has been reached. The bead up height is the height of the bead, which is pressing up against the mirror.

As soon as the Bead up height has been reached, release the pressure down to

the Heat Soak pressure.

d). Cooling Process

Cooling time is the time in which the pipe has to be left undisturbed.

Under no circumstances shall the clamps be opened or the pressure released until the cooling time has elapsed

FAQS

* What’s the difference between HDPE elbow 90 degree & HDPE elbow 45 degree?

A: The main difference is the angle of elbow. HDPE 45degree elbow is used to join two lengths of HDPE pipe in an angle of 45 degrees, while HDPE 90 degree elbow is for welding two HDPE pipe in an angle of 90 degrees.

* Is SUNPLAST HDPE fittings UV resistant?

A: Yes, HDPE fittings made in black color are UV resistant and UV stable and will not structurally degrade from UV light. After a lengthy period of direct UV light contact, the external surface of the fittings change visually to a slightly waxy look, but this does not affect the performance and is removed by a rotary pipe scraper prior to electrofusion welding.

* what’s the meaning of “Butt fusion”? What’s the process of HDPE butt fusion?

A: Firstly, Butt fusion is a thermo fusion process.

Butt fusion involves the simultaneous heating of the ends of two pipe/fitting components which are to be joined, until a molten state is attained on each contact surface.

The two surfaces are then brought together under controlled pressure for a specific cooling time and a homogeneous fusion joint is formed. The resultant joint is fully resistant to end loads and has comparable performance under pressure to the pipe itself.

An electrical heater plate is used to raise the temperature of the pipe ends to the required fusion temperature.

The resulting joint, if it has been properly made, is as strong as the original pipe and can withstand all the loads applied during routine installation and operation

Contact Us

If you have any requirements on HDPE fittings, or any question on our fittings, please contact us freely. SUNPLAST has well trained staff who are available to address your needs and provide technical support to all sectors when needed.

We guarantee that every Electro Fusion 45 Degree Elbow HDPE Pipe Fitting we operate has undergone strict quality control to ensure product quality and price advantage. We create an entrepreneurial platform for our employees to give full play to their innovative potential and a safe, environmentally friendly and healthy working environment. The source of more and more high-tech talents is introduced, which allows us to gather more high precision technical talents in the industry, thus promoting the long-term development of the enterprise.

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